JP2002010327A - Supervisory control apparatus for radio system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce influence on communication service and use the limited transmission capacity of the channel efficiently to supervise and control the conditions of terminal stations. SOLUTION: A supervisory control unit 4 determines a time interval of polling supervisory signals based on how channels are used. A supervisory signals transmission unit 5 transmits supervisory signals to a terminal station 3 following an issuing command from the supervisory unit 4. The advisory control unit 4 automatically changes the time interval of issuing advisory signals in response to how often the channel is used. The terminal station 3 previously examines the conditions of the terminal station 3 at a conditions supervising unit 8 and when an advisory signals receiving unit 9 received advisory signals, a condition signal issuing unit 10 issues condition signals following a command from a terminal control unit 7. A base station 2 receives condition signals at a condition signals receiving unit 6 to report the conditions of the terminal station 3 to the supervisory control unit 4. The supervisory control unit 4 accumulates the acquired conditions of the terminal station 3 on a memory 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control device for a radio system comprising a base station and one or more terminal stations.

[0002]

2. Description of the Related Art A conventional wireless system monitoring and control device will be described with reference to FIG.

FIG. 4 is a block diagram of a conventional supervisory control device. In FIG. 4, the supervisory control device is generally constituted by a supervisory control console 41 that performs supervisory control, a base station 42 that connects terminal stations 43, and a terminal station 43 whose status is monitored.
The base station 42 replies the status of the terminal station 43 according to a command from the monitoring control console 41, and transmits a monitoring signal to the monitoring control unit 44 and the terminal station 43 which manage the collection of status information of the terminal station 43. And a status signal receiving unit 46 for receiving a status signal from the terminal station 43. The terminal station 43 includes a terminal control unit 47 that controls the terminal station 43, a state monitoring unit 48 that monitors the state of the terminal station 43, and a monitoring signal receiving unit 4 that receives a monitoring signal from the base station 42.
9, a status signal transmitting unit 50 for transmitting a status signal to the base station 42.

The operation of the conventional monitoring and control device configured as described above will be described. First, the monitoring console 4
When the monitoring information transmission request from the terminal station 43 reaches the base station 42, the monitoring control unit 44 issues a monitoring signal transmission command to the monitoring signal transmission unit 45, and the monitoring signal transmission unit 45 transmits the monitoring signal to the terminal. It transmits to the station 43 and inquires about the state of the terminal station 43.

[0005] The terminal station 43 checks the state of the terminal station 43 in the state monitor 48, and when the monitor signal is received by the monitor signal receiver 49, transmits the state signal in accordance with an instruction from the terminal controller 47. A status signal is transmitted from the unit 50.

[0006] The base station 42 receives the status signal at the status signal receiving section 46 and reports the status of the terminal station 43 to the monitoring control section 44. The monitoring control unit 44 sends the obtained state of the terminal station 43 to the monitoring control console 41.

[0007]

However, in the above-mentioned conventional supervisory control device, the limited transmission capacity between the base station and the terminal station is used for the supervisory signal for inquiring the terminal station of the status and for the communication service to the terminal station. To use as a mixture,
When a large number of monitoring signals are transmitted, there is a problem that the transmission capacity for a communication service is reduced.

[0008] The present invention solves the above-mentioned conventional problems, and provides a monitoring and control device capable of reducing the influence on communication services and monitoring and controlling the state of a terminal station by efficiently using a limited transmission capacity of a line. The purpose is to provide.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a monitoring and controlling apparatus for a wireless system according to the present invention comprises: a monitoring and controlling apparatus for a wireless system for monitoring a line use condition of a terminal station from a base station; Has a monitoring control unit that detects a line use state of the terminal station and changes a transmission time interval of a monitor signal for inquiring a state from the base station to the terminal station in accordance with the frequency of line use of the terminal station. It is characterized by.
According to the above configuration, the monitoring control unit of the base station detects the line use status of the terminal station, and from the base station to the terminal station corresponding to the frequency of the line use frequency for the communication service of the terminal station. Automatically changes the monitoring signal transmission time interval inquiring about the status of the monitoring signal. As a result, monitoring control corresponding to a change in the frequency of line use can be performed.

The monitoring control unit according to the present invention has a configuration in which, when the frequency of use of the line is high, the transmission time interval of the monitoring signal for inquiring the state from the base station to the terminal station is correspondingly changed. As a result, the influence on the communication service can be reduced, and the limited transmission capacity of the line can be used efficiently.

The base station according to the present invention is provided with a memory for preliminarily storing and storing the status of each terminal station, and the monitoring control unit sends an inquiry to the terminal station in response to an input monitoring information transmission request. If it is not possible, the contents stored in the memory are sent out. As a result, the status of the terminal can be immediately transmitted in response to the monitoring information transmission request.

Further, the monitoring control unit according to the present invention has a configuration in which the line use status of all terminal stations is detected, and a monitoring signal for inquiring the status to each terminal station at a time when the lines are not busy is transmitted. As a result, the influence on the communication service can be reduced, and all terminal stations can be monitored and controlled using the limited transmission capacity of the line efficiently.

Further, the terminal station according to the present invention includes a unique word pattern generation section for changing a unique word pattern used for performing frame synchronization in the base station according to the state of the terminal station and transmitting the unique word pattern to the base station. The base station is configured to include a unique word analysis unit that analyzes the unique word pattern and detects a state of the terminal station. With the above configuration, in addition to being able to efficiently use the limited transmission capacity of the downlink from the base station to the terminal station, a state signal that informs the base station of the state from the terminal station is not shared with the communication service. Therefore, it is possible to monitor the uplink from the terminal station to the base station without affecting the transmission capacity of the limited communication service.

According to the present invention, in a monitoring and controlling apparatus for a radio system for monitoring a line use situation of a terminal station from a base station, the terminal station has a unique word pattern used for performing frame synchronization at the base station. A unique word pattern generation unit that changes according to the state of the terminal station and transmits the unique word pattern to the base station, and the base station includes a unique word analysis unit that analyzes the unique word pattern and detects the state of the terminal station. It is characterized by. According to the above configuration, the state of the terminal station can be transmitted to the base station without affecting the transmission capacity of the limited communication service for the uplink from the terminal station to the base station.

[0015]

Embodiments of the present invention will be described below.

(Embodiment 1) FIG. 1 is a block diagram showing a configuration of a monitoring control apparatus according to Embodiment 1 of the present invention.
As shown in the figure, the supervisory control device is generally constituted by a supervisory control console 1 for performing supervisory control, a base station 2 for connecting a plurality of terminal stations 3, and a terminal station 3 whose status is to be monitored. Base station 2
Responds to the status of the terminal station 3 in response to a command from the monitoring control console 1 and controls the line control of the terminal and monitors the line use status. It comprises a monitoring control unit 4 for performing the monitoring, a monitoring signal transmitting unit 5 for transmitting a monitoring signal to the terminal station 3, and a state signal receiving unit 6 for receiving a state signal from the terminal station 3. The terminal station 3 is a terminal control unit 7 for controlling the terminal station 3.
A state monitoring unit 8 for monitoring the state of the terminal station 3, a monitoring signal receiving unit 9 for receiving a monitoring signal from the base station 2, and a state signal transmitting unit 10 for transmitting a state signal to the base station 2. It is constituted by.

The operation of the monitoring and control device configured as described above will be described. First, the line control unit 11 of the base station 2 checks the line use status of the terminal station 3 while performing the line control of the communication service, and reports it to the monitoring control unit 4. Monitoring control unit 4
Calculates the line use frequency within a certain time based on the line use state.

FIG. 2 is a diagram showing the relationship between the frequency of line use and the transmission time of the monitoring signal. The monitoring control unit 4 determines a monitoring signal transmission time interval based on the relational expression. The “minimum transmission interval” shown in FIG. 2 is based on an unavailability rate, a failure rate, or the like, and is set in advance to correspond to a time interval at which an abnormality must be detected. In addition, when the frequency of line use (A) or more, the communication service can be exchanged normally,
Since the possibility of an abnormal state is reduced, the time interval is set longer according to the frequency of line use. That is, for the terminal station 3 that uses the line frequently, the time interval of the monitoring signal transmission command to the monitoring signal transmitting unit 5 is set to be long. The monitoring signal transmission interval control is always performed, and the optimal time interval is automatically set based on the relational expression of FIG. It is also possible to create a table indicating the relationship between the transmission time and the frequency of use of the line, and operate the system by referring to the table. Monitoring signal transmission unit 5
Transmits a monitoring signal to the terminal station 3 in accordance with the transmission command of the monitoring control unit 4.

The terminal station 3 checks the state of the terminal station 3 by the state monitoring unit 8 and, when the monitoring signal is received by the monitoring signal receiving unit 9, transmits the state signal according to the instruction from the terminal control unit 7. A status signal is transmitted from the unit 10.

The base station 2 receives the status signal at the status signal receiving unit 6 and reports the status of the terminal station 3 to the monitoring control unit 4. The monitoring control unit 4 stores the obtained state of the terminal station 3 in the memory 12.

In response to a monitoring information transmission request from the monitoring console 1, the base station 2 can send the status of each terminal stored in the memory 12 to the monitoring console 1.

As described above, according to the first embodiment of the present invention, the line control unit 11 for monitoring the line use status, the terminal station 3
A monitoring control unit 4 capable of automatically changing a transmission time interval of a monitoring signal for inquiring a state from the base station 2 to the terminal station 3 in accordance with the level of the frequency of use of the line for the communication service. If the terminal station 3 cannot be immediately inquired (due to the frequency of use of the line) based on the monitoring information transmission request from the console 1, the base station 2 can transmit the state of the terminal station 3 to the monitoring control console 1. By providing the memory 12 for storing the states of all the terminal stations 3, the influence of the monitoring signal on the communication service can be relatively easily reduced, and the limited transmission capacity of the line is used efficiently. be able to. Further, by storing the status of the terminal station 3 in the memory 12, the status of the terminal station 3 can be immediately transmitted in response to the monitoring information transmission request from the monitoring console 1.

In the above description, the monitoring control unit 4 changes the time interval of the monitoring signal transmission command to the monitoring signal transmission unit 5 as the frequency of use of the line increases, according to the relational expression of FIG. However, the relationship between the line use frequency and the time interval is not limited to the above-mentioned relational expression, and other types of relational expressions may be used as long as they have an appropriate predetermined relation.

(Embodiment 2) Next, the basic configuration of a monitoring and control apparatus according to Embodiment 2 of the present invention is described in Embodiment 1.
Is the same as Then, in addition to the configuration described in the first embodiment (FIG. 1), the monitoring control unit 4 checks the line congestion status based on the line usage status of the terminal station 3 reported from the line control unit 11, and When it is determined that the above is not the case, a command to send a monitoring signal to the monitoring signal transmitting unit 5 is issued.

As described above, according to the second embodiment of the present invention, the monitoring control unit 4, which checks the congestion status of the line and sends out the monitoring signal when the line is not busy, sets the line for communication service. Since the status of the terminal station 3 can be inquired at a time when the terminal station is not used, the limited transmission capacity of the line can be used more efficiently.

(Embodiment 3) FIG. 3 is a block diagram showing a configuration of a monitoring control apparatus according to Embodiment 3 of the present invention. The difference from the configuration of the first embodiment (FIG. 1) is that a UW pattern analysis unit 3 for analyzing the state of the terminal station 3 using a unique word (UW) pattern is added to the configuration of the base station 2. A UW pattern generation unit 14 that changes the UW pattern according to the state of the terminal station 3 is added to the configuration.
Here, the UW pattern is a fixed pattern used for performing frame synchronization in the base station 2, and conventionally, one type of pattern is used. By having a plurality of UW patterns and using different UW patterns depending on the state of the terminal, the state of the terminal station 3 can be notified to the base station 2.

The differences between the operation of the monitoring and control device configured as described above and that of the first embodiment will be described. The terminal station 3 always checks the state of the terminal station 3 by the state monitoring unit 8 and, when the monitoring signal receiving unit 9 receives the monitoring signal from the base station 2, according to the instruction from the appendix control unit 7. , UW pattern generation unit 14 determines a UW pattern indicating the state of terminal station 3, and sends a state signal from state signal transmission unit 10.

The base station 2 receives the status signal at the status signal receiving unit 6 and reports the UW pattern to the UW pattern analysis unit 13. The UW pattern analysis unit 13 analyzes the state of the terminal station 3 from the UW pattern, and reports the obtained state of the terminal station 3 to the monitoring control unit 4. The monitoring control unit 4 stores the obtained state of the terminal station 3 in the memory 12. In response to a monitoring information transmission request from the monitoring console 1, the base station 2
The state of each terminal stored in the terminal is sent to the monitoring console 1.

As described above, according to the third embodiment of the present invention, the UW
By providing the pattern generation unit 14 and the UW pattern analysis unit 13 for checking the state of the terminal station 3 from the UW pattern,
The base station 2 can be notified of the state of the terminal station 3 (abnormality information and the like) by changing the UW pattern for each state and transmitting it. As a result, in addition to being able to efficiently use the limited transmission capacity of the downlink from the base station 2 to the terminal station 3, the state signal for notifying the base station 2 of the state from the terminal station 3 is transmitted to the communication service. Base station 2 without sharing
, It is possible to monitor the uplink from the terminal station 3 to the base station 2 without affecting the transmission capacity of the limited communication service.

In the third embodiment, too, the configuration described in the second embodiment, that is, the supervisory control unit 4 uses the line use status of the terminal station 3 based on the line use status of the terminal station 3 reported from the line control unit 11. It may be configured to check the congestion status and issue a monitoring signal transmission command to the monitoring signal transmitting unit 5 when it is determined that the line is not busy.

[0031]

According to the monitoring control apparatus for a wireless system of the present invention, the base station detects the line use status of the terminal station, and responds to the frequency of the line use for the communication service of the terminal station. Since the transmission time interval of the monitoring signal for inquiring the state from the base station to the terminal station is automatically changed, the monitoring state for the communication service is changed in order to change the monitoring state in response to the change in the frequency of line use. Influence can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram of a supervisory control device according to Embodiments 1 and 2 of the present invention.

FIG. 2 is a diagram illustrating a relationship between a line use frequency and a monitoring signal transmission interval.

FIG. 3 is a block diagram of a supervisory control device according to a third embodiment of the present invention.

FIG. 4 is a block diagram of a conventional supervisory control device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 monitoring control console 2 base station 3 terminal station 4 monitoring control unit 5 monitoring signal transmission unit 6 status signal reception unit 7 terminal control unit 8 status monitoring unit 9 monitoring signal reception unit 10 status signal transmission unit 11 line control unit 12 memory 13 UW Pattern analysis unit 14 UW pattern generation unit

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04M 3/22 H04Q 7/04 BF term (reference) 5K019 BA45 BA51 BB03 CA05 5K042 AA06 CA02 CA13 EA01 JA04 5K051 AA05 AA09 CC07 DD15 5K067 AA11 DD25 EE02 EE10 GG01 HH21 HH23 LL01

Claims (6)

[Claims] 1. A monitoring and control apparatus for a radio system, wherein a base station monitors a line use state of a terminal station, wherein the base station detects a line use state of the terminal station, and determines whether the line use frequency of the terminal station is high or low. A monitoring control unit for changing a transmission time interval of a monitoring signal for inquiring a state from the base station to the terminal station in response to the above. 2. The radio communication system according to claim 1, wherein the monitoring control unit changes a transmission time interval of a monitoring signal for inquiring a state from the base station to the terminal station correspondingly long when the frequency of line use is high. System monitoring and control equipment. 3. The base station includes a memory for storing the status of each terminal station in advance, and the monitoring control unit cannot make an inquiry to the terminal station in response to an input monitoring information transmission request. 2. The monitoring and controlling device for a wireless system according to claim 1, wherein in the case, the contents stored in the memory are transmitted. 4. The monitoring control unit according to claim 1, wherein the monitoring control unit detects the line use status of all the terminal stations and sends out a monitoring signal for inquiring each terminal station of a state at a time when the lines are not busy. The monitoring and control device for a wireless system according to any one of the above. 5. The terminal station includes a unique word pattern generation unit that changes a unique word pattern used for performing frame synchronization at a base station according to a state of the terminal station and transmits the unique word pattern to the base station. The wireless system monitoring and control device according to any one of claims 1 to 4, wherein the base station includes a unique word analysis unit that analyzes the unique word pattern and detects a state of the terminal station. 6. A monitoring and control apparatus for a radio system for monitoring a line usage state of a terminal station from a base station, wherein the terminal station is provided with a unique word pattern used for frame synchronization at the base station. A unique word pattern generation unit that changes according to the state of the terminal station and transmits the unique word pattern to the base station, and the base station includes a unique word analysis unit that analyzes the unique word pattern and detects the state of the terminal station. A monitoring and control apparatus for a wireless system.